<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=p, initial-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
    <style>
    p{
        color:red;
    }
    .one{
        color:red;
    }
        #test{
            color:green;

        }
    
    
    </style>
</head>
<body>
    <p class="one" id="test">hello </p>
</body>
</html>